首頁 放大器 可編程與可變增益放大器 (PGA 與 VGA)
首頁
放大器
可編程與可變增益放大器 (PGA 與 VGA)

VCA822

現行

寬頻、> 40dB 增益調節範圍、V/V 線性可變增益放大器

立即訂購
產品規格表

VCA822

現行
產品規格表 立即訂購

產品詳細資料

PGA/VGA VGA Number of channels 1 Vs (min) (V) 7 Vs (max) (V) 12 Input type Differential Output type Single-ended Interface type Resistance BW at Acl (MHz) 150 Acl, min spec gain (V/V) 2 Voltage gain (min) (V/V) 100 Voltage gain (max) (V/V) 2 Gain (max) (dB) 40 Architecture Bipolar Features Analog Gain Set, Differential to Single-ended conversion Vos (offset voltage at 25°C) (typ) (mV) 4 Input voltage noise (typ) (µV√Hz) 0.0082 Slew rate (typ) (V/µs) 1700 Iq per channel (typ) (mA) 36.5 Rating Catalog Operating temperature range (°C) -40 to 85
PGA/VGA VGA Number of channels 1 Vs (min) (V) 7 Vs (max) (V) 12 Input type Differential Output type Single-ended Interface type Resistance BW at Acl (MHz) 150 Acl, min spec gain (V/V) 2 Voltage gain (min) (V/V) 100 Voltage gain (max) (V/V) 2 Gain (max) (dB) 40 Architecture Bipolar Features Analog Gain Set, Differential to Single-ended conversion Vos (offset voltage at 25°C) (typ) (mV) 4 Input voltage noise (typ) (µV√Hz) 0.0082 Slew rate (typ) (V/µs) 1700 Iq per channel (typ) (mA) 36.5 Rating Catalog Operating temperature range (°C) -40 to 85
SOIC (D) 14 51.9 mm² (8.65 mm × 6 mm) VSSOP (DGS) 10 14.7 mm² (3 mm × 4.9 mm)
  • 150-MHz Small-Signal Bandwidth
    (G = +10 V/V)
  • 137 MHz, 5 VPP Bandwidth (G = +10 V/V)
  • 0.1-dB Gain Flatness to 28 MHz
  • 1700 V/μs Slew Rate
  • > 40-dB Gain Adjust Range
  • High Gain Accuracy: 20 dB ±0.3 dB
  • High Output Current: ±160 mA
  • 150-MHz Small-Signal Bandwidth
    (G = +10 V/V)
  • 137 MHz, 5 VPP Bandwidth (G = +10 V/V)
  • 0.1-dB Gain Flatness to 28 MHz
  • 1700 V/μs Slew Rate
  • > 40-dB Gain Adjust Range
  • High Gain Accuracy: 20 dB ±0.3 dB
  • High Output Current: ±160 mA

The VCA822 device is a DC-coupled, wideband, linear in V/V, continuously variable, voltage-controlled gain amplifier. It provides a differential input to single-ended conversion with a high-impedance gain control input used to vary the gain down 40dB from the nominal maximum gain set by the gain resistor (RG) and feedback resistor (RF).

The internal architecture of the VCA822 device consists of two input buffers and an output current feedback amplifier stage integrated with a multiplier core to provide a complete variable gain amplifier (VGA) system that does not require external buffering. The maximum gain is set externally with two resistors, providing flexibility in designs. The maximum gain is intended to be set between +2 V/V and +100 V/V. Operating from ±5-V supplies, the gain control voltage for the VCA822 device adjusts the gain linearly in V/V as the control voltage varies from +1 V to 1 V. For example, set for a maximum gain of +10 V/V, the VCA822 device provides 10 V/V, at
1-V input, to 0.1 V/V at –1 V input of gain control range. The VCA822 device offers excellent gain linearity. For a 20-dB maximum gain and a gain-control input voltage varying between 0 V and 1 V, the gain does not deviate by more than ±0.3 dB (maximum at +25°C).

 

The VCA822 device is a DC-coupled, wideband, linear in V/V, continuously variable, voltage-controlled gain amplifier. It provides a differential input to single-ended conversion with a high-impedance gain control input used to vary the gain down 40dB from the nominal maximum gain set by the gain resistor (RG) and feedback resistor (RF).

The internal architecture of the VCA822 device consists of two input buffers and an output current feedback amplifier stage integrated with a multiplier core to provide a complete variable gain amplifier (VGA) system that does not require external buffering. The maximum gain is set externally with two resistors, providing flexibility in designs. The maximum gain is intended to be set between +2 V/V and +100 V/V. Operating from ±5-V supplies, the gain control voltage for the VCA822 device adjusts the gain linearly in V/V as the control voltage varies from +1 V to 1 V. For example, set for a maximum gain of +10 V/V, the VCA822 device provides 10 V/V, at
1-V input, to 0.1 V/V at –1 V input of gain control range. The VCA822 device offers excellent gain linearity. For a 20-dB maximum gain and a gain-control input voltage varying between 0 V and 1 V, the gain does not deviate by more than ±0.3 dB (maximum at +25°C).

 
filter 尋找其它 可編程與可變增益放大器 (PGA 與 VGA)
下載 觀看有字幕稿的影片 影片

您可能會感興趣的類似產品

open-in-new 比較替代產品
功能相同，但針腳輸出與所比較的裝置不同。
LMH6505 現行 頻帶、低功耗、dB 線性可變增益放大器 Faster slew rate (1700 V/us) in SOIC 8 and VSSOP 8 pin package

技術文件

找不到結果。請清除您的搜尋條件，然後再試一次。
檢視所有 4
重要文件 類型 標題 格式選項 下載最新的英文版本 日期
* 資料表 VCA822 Wideband, > 40-dB Gain Adjust Range, Linear in V/V Variable Gain Amplifier datasheet (Rev. D) PDF | HTML 2015/10/29
電子書 The Signal e-book: A compendium of blog posts on op amp design topics PDF | HTML 2017/3/28
應用說明 Implementating a Variable-Length Cat5e Cable Equalizer 2010/4/25
應用說明 Wireline Data Transmission and Reception 2010/1/27

設計與開發

如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。

開發板

DEM-VCA-MSOP-1A — DEM-VCA-MSOP-1A

支援產品和硬體
有庫存
限制：
??asset.out-of-stock-ti_zh_TW??
無法提供
開發板

DEM-VCA-SO-1B — DEM-VCA-SO-1B

支援產品和硬體
有庫存
限制：
??asset.out-of-stock-ti_zh_TW??
無法提供
模擬型號

VCA822 PSpice Model (Rev. A)

SBOC290A.ZIP (45 KB) - PSpice 模型
支援產品和硬體
模擬型號

VCA822 TINA-TI Reference Design (Rev. B)

SBOC289 (13 KB) - TINA-TI 參考設計
支援產品和硬體
模擬型號

VCA822 TINA-TI Spice Model (Rev. A)

SBOM315 (17 KB) - TINA-TI Spice 模型
支援產品和硬體
封裝 針腳 CAD 符號、佔位空間與 3D 模型
SOIC (D) 14 Ultra Librarian
VSSOP (DGS) 10 Ultra Librarian
適用 TI 的評估品項標準條款與條件。

訂購與品質

支援與培訓

內含 TI 工程師技術支援的 TI E2E™ 論壇

以英文檢視所有論壇主題

內容係由 TI 和社群貢獻者依「現狀」提供，且不構成 TI 規範。檢視使用條款。

若有關於品質、封裝或訂購 TI 產品的問題，請參閱 TI 支援。​​​​​​​​​​​​​​

影片